Its red core contains an enormous amount of energy.
Shalai is mostly bad because it matches poorly against Tempet Djinn, but Sleep is a card actually seeing constructed play now
Most Used Format Non-Meta Decks Public Decks 297 Tournament Decks 0 Total Copies 366 Avg Copies / Deck 1.23 Main Deck 88% 322 copies in 258 decks Extra Deck 0% 0 copies in 0 decks Side Deck 12% 44 copies in 39 decks Similar Cards Cards with related names, effects, or gameplay patterns
A card that creates Treasure tokens can also be helpful, since sacrificing your Treasure to gain mana will also trigger any Artifact death triggers like Judge Magiset Gabarnth's
You can even take a KO on one of their Fossils for an additional point, making it so you only need to KO one other ex Pokemon
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